The surname Giuliani is of Italian origin, derived from the personal name Giuliano, which means "youthful" and is a form of the Latin name Iulius. The name Giuliani has been used in Italy since the Middle Ages and has been adopted by people around the world. Historically, the name was often associated with nobility and clergy, reflecting its patronymic origins. Over time, the name has evolved and spread globally, with its popularity fluctuating in different regions. Today, Giuliani is recognized as a unique and culturally rich surname with significant historical roots.
